Circuits (Unit 4) Flashcards

(25 cards)

1
Q

What is electrical force?

A

When objects interact with each other based on their charge. The objects can push or
pull one another.

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2
Q

What happens when two like charges/poles are near each other?

A

They repel against each other.

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3
Q

What happens when two opposite charges/poles are near each other?

A

They attract.

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4
Q

What are atoms?

A

A basic unit of matter

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5
Q

What is a subatomic particle?

A

Particles that make up an atom. Neutrons, protons, electrons.

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6
Q

What is a neutron?

A

A subatomic particle with neutral charge

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7
Q

What is a proton?

A

A subatomic particle with positive charge

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8
Q

What is an electron?

A

A subatomic particle with negative charge

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9
Q

What is a valence electron?

A

The outermost electron in an atom

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10
Q

What is a series circuit?

A

A circuit with only one path for electrons or energy to flow through

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11
Q

What is a conductor

A

A material that allows electricity to flow

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12
Q

What is a conductor example?

A

Metals (Copper, Aluminum, Iron, etc.)

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13
Q

What is a insulator?

A

A material that prohibits electricity from flowing

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14
Q

What is an insulator example?

A

Wood, plastic, cotton, glass, etc.

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15
Q

What is a current

A

The flow of electricity

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16
Q

What do you need to make a circuit?

A

A battery, wires, and a load

17
Q

What does a battery do?

A

Provide the energy source that pushes electric charges around a
circuit. They have a positive and negative side

18
Q

What are wires?

A

Conductive material that allow electrons to travel

19
Q

What is a load?

A

A device in which, when electrons pass through it, transfer that
energy from electrical to light and heat

20
Q

What is a switch?

A

A device used to open and close a circuit

21
Q

What are the Ohm’s Law equations?

A

V = I x R
I = V/R
R = V/I

22
Q

What is current?

A

The speed of the flow of electrons

23
Q

What is resistance?

A

How difficult it is for electrons to move through the circuit

24
Q

What is voltage?

A

The amount of energy provided to the circuit by the power source

25
Why does the copper wire have to be coiled on an electromagnet?
The coiled wire allows for electrons to rapidly flow through it and spin in the same direction which magnetizes the metal core